Building Automations 1 Practice Test

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• Which facility type would most likely require humidity control due to environmental sensitivity?
• In BAS, which item is typically considered a field device?
• Which device sets the zone cooling or heating demand in a VAV system?
• What is a point naming convention and why is it important in BAS?
• Distinguish between absolute and relative setpoints.
• Downlighting is a common lighting approach for which part of a commercial space?
• Which statement about the longest lasting lamp in common indoor lighting is true?
• Fault detection and diagnostics (FDD) in BAS refers to what?
• What are the three common designs of UPS systems?
• What data is typically used by fault detection and diagnostics (FDD) to identify faults?
• What is the most common method used to add humidity into a building?
• Which units are commonly used for temperature, pressure, and air flow in BAS?
• What is a common method to integrate energy measurement into a BAS?
• What is the purpose of time synchronization in BAS, and which standards are used?
• What is an example of a fault that triggers a BAS alarm?
• What is the function of a damper actuator in BAS?
• Which BACnet service would you use to read multiple properties in one request?
• Which feature helps prevent nuisance alarms by temporarily silencing non-critical alarms?
• Why is time synchronization using NTP important in BAS?
• Which of the following is a HID lamp type?
• Which of the following is a HID lamp type?
• What is the role of an economizer in an AHU and how is it controlled by BAS?
• What is the primary purpose of a Building Automation System (BAS)?
• Define a trend log in BAS and its usefulness.
• What does a proportional-integral (PI) controller do in BAS optimization?
• In BAS terminology, what does the 'present value' property represent?
• Which unit is used to measure the output of a light source?
• Explain setback in building automation.
• What is point mapping in BAS commissioning?
• Which lamp technology is associated with longevity and efficiency?
• In network security zoning, what is the main rationale for segmenting BAS devices from IT networks?
• Which statement best describes the purpose of a building automation system (BAS) compared to a standalone HVAC controller?
• Which of the following is not a type of control signal for a building automation system?
• What do FAT and SAT stand for in BAS commissioning, and what do they verify?
• What three items do building owners consider when determining the feasibility of a building automation system?
• How does a reheat sequence operate in a VAV system?
• Which rooms typically have a dedicated AHU?
• Which facility category is explicitly noted as having humidity control requirements?
• What is integral windup and a common method to prevent it?
• During a demand response event, which action is BAS most likely to take to reduce peak demand?
• When using an override, why is a time limit commonly applied?
• What is a setpoint in BAS, and which are common examples?
• What are the main functions of an HVAC system?
• Which HVAC system uses a system of ductwork, dampers, and fans to distribute heating and cooling?
• What is commissioning versus retro-commissioning in BAS terms?
• Define PI and PID control in BAS and one key difference.
• What metric would you monitor to verify energy performance improvement after optimizing BAS?
• Which UPS design is described as delta conversion on-line?
• What is network security zoning in BAS?
• How does an economizer function in an air handling unit?
• What is a typical goal of energy analytics in a Building Energy Management System?
• Which of the following are considered to be critical electrical loads?
• What is the role of the field bus/network in a BAS?
• What is the purpose of outdoor air sensors in balancing indoor air quality and energy efficiency?
• How can sensor drift impact BAS performance?
• What is a sequence of operations (SOO) in BAS, and what is its purpose?
• Which operations are commonly supported by BAS points?
• A method of dimming that reduces the amount of time that full voltage is applied to the lamp is referred to as?
• Describe a basic zone-level control loop for a VAV system in a BAS.
• What defines a closed-loop control system in BAS?
• Which control system historically originated as the earliest method for regulating HVAC in buildings?
• What two variables are compared when controlling outside air and return air?
• Which statements about BAS network topologies are true?
• What are the five comfort zone requirements?
• Define psychometrics.
• Which metric is commonly used to assess chiller efficiency in BAS?
• Which device is typically adjusted by the zone thermostat to meet the zone's cooling or heating demand in a VAV system?
• What is Fault Detection and Diagnostics (FDD) in BAS?
• What is a functional performance test in BAS commissioning and what should it verify?
• Define the term sensor.
• Which lighting control system uses microprocessor-based sensors and controls rather than a microprocessor-based control panel?
• What should be included in a commissioning plan?
• Why are timelines and responsibilities included in a commissioning plan?
• What is one reason phototransistor technology is replacing photoresistor technology?
• What is the difference between direct-acting and reverse-acting control valves in BAS?
• In BAS control terms, which statement best describes the difference between DCV and VAV?
• In the closed-loop lighting control method the light level sensor views an area of the room that represents the ?
• In a direct expansion (DX) system, where does cooling occur?
• What two variables are compared when controlling outside air and return air?
• Which component typically forms the centralized part of a chilled-water BAS?
• What controls motor speed and braking?
• Which statement best describes a Schedule object's function in BAS?
• In a BAS, what is a point and how is it used?
• What does COVNotification provide?
• How do you perform a 'point-to-point' check during site acceptance testing?
• Which UPS design provides immediate backup power by switching to battery without delay?
• What is a feedforward control strategy and when would you use it?
• Humidity control requirements are typically associated with which facility type?
• Which of the following is not a convenience function of a building automation system?
• In building automation, a sensor used to detect light presence is typically called what?
• Which device executes actions such as valves, dampers, pumps, and lights?
• Which statement best defines a sensor's role in building automation?
• How can BAS data identify chiller inefficiency?
• What is the purpose of a setpoint map in a BAS database?
• What is the typical effect of occupancy sensing on energy use?
• A common cause of unoccupied setpoint drift is misconfigured schedules or sensor drift; how is it typically corrected?
• Net metering involves a meter that can measure energy flow in which directions?
• What is an AHU and what BAS controls are typically applied to it?
• Why is audit logging important for overrides in BAS?
• Which of the following will not change building pressure?
• The pressurization factor is expressed as a percentage of which airflow?
• Why is time synchronization important in BAS?
• Which loads would typically be considered critical electrical loads in a building?
• Which component functions as the user interface for BAS operators?
• What is hysteresis in thermostat control?
• How do passive infrared sensors work?
• What component is primarily responsible for adjusting airflow to meet zone loads in a VAV system?
• What is demand response in BAS?
• Which technology is not used by occupancy sensors to detect the presence of people within a space?
• What distinguishes hard sensors from soft sensors in BAS?
• Why is alarm prioritization critical in a building automation system?
• Which BACnet service would you use to write a single property on an object?
• What commonly causes transient voltages?
• What is the primary role of a data historian in BAS?
• How does chiller sequencing logic work in a BAS?
• Most common form of secondary power?
• What is occupancy-based reset in HVAC control?
• What is the purpose of HMI/EMS in a BAS?
• Which of the following is a common anti-tamper security measure in BAS?
• Which Modbus variants are commonly used in BAS contexts?
• Which is the most significant benefit of a building automation system?
• Lumens define which aspect of lighting?
• In a BAS control loop, which term represents the difference between the setpoint and the process variable?
• Which of the following is not a function of the HVAC system?
• Which approach is preferred for large BACnet networks and remote access?
• In HVAC terminology, psychrometrics refers to what?
• Which of the following is NOT a typical component of a forced air air handling unit?
• Which statement about LED technology is true?
• What are 3 components typically associated with a forced air air handling unit?
• What is meant by a "point-to-point" test in BAS commissioning?
• How does occupancy sensing contribute to energy savings in BAS?
• What is SCADA and how does it relate to BAS?
• BACnet is commonly implemented over which transport options in BAS networks?
• In distributed lighting control systems, which component most commonly initiates control actions?
• What is retro-commissioning and why is it important?
• Which of the following is typically not an advantage of centralized lighting control systems?
• Which of the following are core hardware components of a BAS?
• Which statement best describes the effect of occupancy-based ventilation control (DCV) on energy use?
• Why is redundancy important in BAS hardware design?
• What is the purpose of a simple fault-detection rule in BAS?
• Which statement about historical data in BAS analytics is correct?
• What is the typical communication protocol used for BAS in intelligent buildings?
• What is a demand response event and how can BAS participate?
• In BAS, what is the primary purpose of a 'priority array'?
• What is a commissioning plan in BAS and what should it include?
• Provide an example of a simple fault-detection rule for a water-cooled chiller.
• What is the role of Points/Tags in BAS?
• Describe a typical chiller plant sequence of operations in BAS.
• In ceiling lighting, which arrangement directs light downward to illuminate tasks?
• What is the difference between open and closed protocols in BAS?
• Which condition aids in keeping contagions from entering an isolation room?
• Which of the following events will not require a shutdown of the supply air fan?
• Which lamp technology is described as the longest lasting?
• What type of AHU does not have a heating coil?
• Soft sensors rely on what to estimate values?
• What is the primary purpose of AHU mixing dampers in building HVAC?
• Which term best describes a lighting control approach where decisions are made at local devices rather than a central controller?
• What is a black diagram used for in building automation?
• In a BAS, what is the typical relationship between a controller and an actuator?
• Automatic lighting control using a light level sensor is designed to respond to what environmental cue?
• What is the role of a VFD in pumping systems within BAS?
• Which of the following is typically verified by a functional performance test?
• Which statement about trend log usefulness is least accurate?
• What is a controller?
• Which energy source is most commonly used to supply backup power for temporary outages in building facilities?
• What is the significance of a Schedule object in a Building Automation System?
• Which of the five comfort requirements has the greatest effect upon temperature stratification within a room?
• What is the most common type of indoor commercial lighting installation?
• What is scaling in BAS point engineering and why is it necessary?
• How does a Building Energy Management System (BEMS) differ from a BAS?
• Which objective best describes ASHRAE 62.1?
• What is a deadband in a control loop and why is it used?
• Which is an example of a fault-detection rule for a water-cooled chiller?
• What is the role of outdoor air (OA) sensors in BAS decisions?
• What are FAT and SAT in BAS commissioning?
• What is the function of a heat recovery ventilator (HRV) in BAS?
• What is a Variable Frequency Drive and how does BAS optimize its operation?
• Which supply fan shutdown event is not a hardwired safety circuit?
• Which sensor type reads infrared energy to detect occupancy?
• Distributed lighting control systems are most commonly controlled by?
• AHU mixing dampers are used to?
• Distributed lighting control systems are most commonly controlled by what?
• Which statement best describes the difference between BACnet MS/TP and BACnet IP networks?
• What is the main purpose of humidity control in an HVAC system?
• In Modbus communications, which statement accurately describes RTU transport characteristics?
• Which action in PID control responds to the rate of change to dampen oscillations?
• Which statement best describes a global controller in BAS?
• What is maintenance mode in BAS and how does it differ from run mode?
• Define OPC UA in the context of BAS interoperability.
• In a building automation system, how do control strategies differ between chilled-water systems and direct-expansion systems?
• What are two common sensor outputs used in BAS sensors and what do they indicate?
• What is an override in BAS context and when is it typically used?
• What is a point naming convention and why is it important?
• What is the purpose of point-to-point verification in data integrity?
• Which BACnet service would you use to read a sensor value?
• How can a BAS analyst detect sensor drift using data?
• What does interface verification involve in a BAS commissioning plan?
• What is the importance of lockout/tagout (LOTO) in BAS maintenance activities and when is it applied?
• In BACnet, what is the difference between an AI object and an AO object?
• Contact bounce is most commonly associated with what electrical issue?
• What type of control is connected directly to the sensors and actuators that it communicates with?
• The heating and cooling functions of an HVAC system rely on the basic principles of?
• What is the difference between direct digital control (DDC) and pneumatic control?
• Which of the following best describes the measurements used by sensors to monitor power quality?
• Which is a common cause of unoccupied setpoint drift, and how is it corrected?
• Which statement best describes how alarms should be managed in BAS?
• Which statement defines a trend in BAS?
• What best describes the difference between centralized and distributed lighting control systems?
• What is the purpose of exception scheduling in BAS?
• Which BACnet object type is typically used for sensor measurements?
• Why is it important to suppress non-critical alarms in BAS?
• Which two subsystems are identified as primary targets for energy efficiency improvements in a building automation context?
• Which supply fan shutdown scenario is typically scheduled rather than hardwired safety?
• Weather compensation in BAS is used to
• Explain valve stiction and its impact on BAS performance.
• Which statement best describes a relative setpoint?
• What is the role of supply air static pressure control in a BAS?
• Net metering uses a meter that can measure energy in which direction(s)?
• Which lighting installation is most commonly used for general ceiling illumination in commercial interiors?
• What is a pneumatic control system?
• A phototransistor is defined as what?
• In Modbus communications for BAS, which statement is accurate about RTU and TCP?
• Which occupancy sensor uses reflected sound waves and listens for a phase shift in the reflected sound returning to sense the presence of people?
• Which item is NOT among the three items building owners typically consider for feasibility?
• The automatic lighting control that uses a light level sensor to turn lamps on around dusk and off at dawn is called?
• Which statement best describes the relationship between local and global controllers in BAS architecture?
• Which are primary targets for improving energy efficiency with an automation system?
• What does an economizer in BAS refer to?
• Does building age determine the priorities of a building automation system?
• Explain alarm fatigue in BAS and a mitigation approach.
• What is the purpose of a deadband in a control loop?
• In a chilled-water system, where is cooling primarily produced?
• What is occupancy-based lighting control?
• Which component is primarily responsible for moving air through the building in a forced air system?
• What does AHU stand for?
• In indoor commercial lighting, what does downlighting primarily do?
• What does LED stand for?
• How does a VAV terminal unit typically maintain zone temperature?